Physics Flashcards - Chapter 8 0.0 / 5 ? PhysicsD.C. ElectricityASOCR Created by: Ryan AlexanderCreated on: 14-03-17 13:22 What is the equation linking resistance, potential difference and current together? V = IR, Potential difference = Current x Resistance 1 of 10 What is the equation for Current, Charge and time? Current = (Change in) Charge / (Change in) time 2 of 10 What are the two types of charge? Postive and Negative 3 of 10 What is the unit of Electic Charge? Coulombs (C) 4 of 10 What is 1 Coulomb in base units? 1 A s 5 of 10 What is the Elementary Charge? 1.6x10-19 C 6 of 10 What is Kirchoff's first law? For any point in an electrical circuit, the sum of the currents into that point is equal to the sum of the currents out of that point. 7 of 10 What is the Conservation of Charge? Electric charge can neither be created nor destroyed. The total amount of electric charge in the universe is constant. 8 of 10 9A goes into a junction, and on one way out there is 4A. What current is going through the other way out of the junction? 5A (9A - 4A = 5A) 9 of 10 What is the equation for mean drift velocity? I = Anev , Current = Mean drift velocity x 1.6x10-19 (Elementary Charge) x Number density x Cross-sectional area 10 of 10
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